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Finding the Fourth Proportional to 328,044.80, 492,067.20 and 300,051.20

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Solution

The fourth proportional to 328,044.80, 492,067.20 and 300,051.20 is: 450,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,044.80 : 492,067.20 = 300,051.20 : x
  2. Step 2: Convert to fraction form
    328,044.80/492,067.20 = 300,051.20/x
  3. Step 3: Cross multiply
    328,044.80x = 492,067.20 × 300,051.20
  4. Step 4: Simplify right side
    328,044.80x = 147,645,353,840.64
  5. Step 5: Solve for x
    x = 147,645,353,840.64/328,044.80
  6. Step 6: Final answer
    x = 450,076.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.